Question

How do you find the greatest common factor of 30, 12?

Answer 1

`GCF(12,30)=6`

Explanation:

First, split each number into their factors.

`30=1,2,3,5,6,10,15,30`
`12=1,2,3,4,6,12`

Now we look for the greatest number appearing in both.

Both numbers have these factors:
`1,2,3,6`

The greatest common factor will be the largest number in this list, which is `6`.